Adhesive stay-tape.



No. 566,261. Patented 1an. 22. |901. R. BUTTERWURTH.

ADHESIVE STAY TAPE.

(Application led Aug. 13, 1900.)

(No Model.)

Unirse Sterns Batteri* rricn.

ROBERT BUTTERWOR'IH, OF SOMERVILLE, MASSACHUSETTS, ASSIGNOR OF ONE-HALFTO THE REVERSIBLE COLLAR COMPANY, OF BOSTON, MAS- SACI-IUSETTS.

ADH ESIVE STAY=TAPE.

SPECIFICATION forming part of Letters Patent No. 666,261, dated January22, 1901.

Application tiled August 13, 1900 Serial No. 26,677. (No model.)

To @ZZ whom zit muy concern-,.-

Be it known thatI, ROBERT BU'rTnRwoR'rH, a citizen of the United States,residing at Somerville, in the county of Middlesex and Commonwealth ofMassachusetts, have invented certain new and useful Improvements inAdhesive Stay-Tapes, of which the following is a full, clear, and exactdescription.

The introduction of machinery in the man- Io ufacture of paper boxes hasmade it necessary to use various methods for holding the corners of thebox together before the covering-paper is put on. In one of thesemethods-that to which this invention relates-a narrow strip of paper,cloth, or cloth and paper combined is used for the purpose of thusholding the corners of the boxes, one side of such strip being coatedwith glue or otheradhesive substance. This strip is calle( adhezo sivestay-tape and is fed automatically by a process which dampens the glueside, attaches the dampened portion to the work, and is cut off at theproper point. The part attached to the box adheres to each side of thecorner,

and hence forms a right angle. This angle in the stay-tape is formed bythe machine just before contact with the work is made, and it isdesirable that the apex of the angle should be at or near the center ofthe tape and 3o parallel to the edges of the tape. In refractorymaterial this correct formation of the angle is sometimes impossible,and in many cases serious loss of time and material has occurred fromthis cause, the tape instead of being correct-ly fed gradually veeringmore and more from the proper line until an insufficient amount of thetape is left at either side of a box-corner to properly hold the same.

The object of my invention is to obviate 4o this defect and to produce astay-tape that can always be depended upon to bend at the right placeand to be accurately guided to the box-corners, thereby rendering evenre* fractory material useful.

My invention for this purpose consists, es-

sentially, in forming a slight depression or groove in the tape alongthe line where the angle is to be made, and thereby providing a guideadapted for the accurate presentation 5o of the tape.

Referring to the drawings forming part of this specification, Figure lis a perspective view of a coil of my improved stay-tape. Fig.

2 is a similar view, upon a smaller scale, showing the tape beingapplied to a box-corner. Fig. 3 is a transverse section, upon agreatly-enlarged scale, of the tape with my groove formed therein.

The reference-numeral l indicates the staytape wound in a coil 3 andhaving glue or 6o other adhesive substance applied to one face.Longitudinally in this tape, and preferably, although notnecessarily,midway between the lateral edges, is a crease or groove 2.This groove need not be deep, but is made sufti- 55 ciently pronouncedto perform the double functions of both insuring the proper line of foldin the tape and accurately guiding the tape to the box-corner. Theangular block 4 is illustrated as performing the work 7o of a former,its corner or edge 5 engaging the groove 2 of the tape.

In Fig. 2 the numeral G indicates a box in the process of having thestay-tape applied to a corner thereof, two of its corners beingrepresented as already provided with sections l of the tape.

I have found that in actual use my improved stay tape works perfectly.It is always guided to the box-corners with abso- 8o lute accuracy. Thebend is uniform, smooth, and invariably in the right place. It makes aperfectly square corner, and the tape is never wrinkled, broken, orotherwise rendered imperfect. Consequently I am enabled to employ forstay-tape any tough or refractory material which may be desired for thesecure fastening of the boxes without danger of loss of time or of thematerials themselves.

Vhat I claim as my invention, and for 9o which I desire Letters Patent,is as follows, t0 Wit:

As a new article of manufacture, a coil of gummed stay-tape having alongitudinal crease or groove formed therein, substantially asdescribed.

In testimony that I claim the foregoing invention I have hereunto set myhand this 7th day of August, 1900.

ROBERT BUTTERWORTIAI.

Witnesses:

F. E. CALLER, A. B. UPHAM.

